How do you balance the need to compress information displayed in a mobile app and presenting the full application as it was designed?
The interviewer is continuing to ask operational questions. Throughout the interview, an interviewer will ask various types of questions. No two interviewers are alike, so the question they ask and the order they ask them in will differ. Additionally, the questions will become more complex as the interview progresses. This indicates that the hiring manager is gaining confidence in your ability and is seeking to explore your background in more detail.
"Unlike web browsers or computer-based applications, mobile devices have limited user interfaces. Therefore the information presented needs to be compressed and economized. However, the users expect the same experience they get when accessing applications on larger devices. This requires the developer to carefully decide what information will be presented on each screen and how it will be displayed. Techniques I use to accomplish this include carefully choosing typefaces and font sizes, using various colors and backgrounds, incorporating whitespace into the application, and using graphics and icons throughout the application."
